<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            position: relative;
            width: 400px;
            margin: auto;
        }
        .box .one{
            max-width: 400px;
        }
        .two{
            position: absolute;
            top: 0px;
            left: 0px;
        }
        .three{
            position: absolute;
            right: 0;
            bottom: 4px;
        }
    </style>
</head>
<body>
        <h1 style="text-align: center;">促销图</h1>
        <div class="box">
        <img src="./image/促销.png" alt="" class="one">
        <img src="./image/促销上标.png" alt="" class="two">
        <img src="./image/促销下标.png" alt="" class="three">
        </div>

  
</body>
</html>